2 layers60 × 94 mm
Power
gugray/InterGalacticReceiver
Tune in to alien transmissions on a CRT screen! Shaders are involved.
8 parts
2 layers60 × 94 mm
Tune in to alien transmissions on a CRT screen! Shaders are involved.
- Size
- 60 × 94 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 43
- Pads
- 120
- Tracks, vias
- 267, 40
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Oct 2025
- Updated
- 4 Mar 2026
Overview
Mcu is an open-source printed circuit board by gugray, from the gugray/InterGalacticReceiver repository on GitHub. It is a 2-layer board of 60 × 94 mm with 35 parts on 43 nets, routed with 267 tracks and 40 vias.
It is built around the ATTINY3216-SF and MBR0520. Its parts include 13 resistors, 6 capacitors, 3 diodes, 3 transistors and 3 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATTINY3216-SF
SOIC-20-300mil-40℃~+125℃ 16MHz 18 2.7V~5.5V 256Byte 2KB 32KB 8 Bit AVR Built-in FLASH SOIC-20-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MBR0520
SOD-123-55℃~+150℃ 20V 450mV@500mA 5.5A 500mA Independent SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
README
README.mdIntergalactic Receiver
The Intergalactic Receiver is an open-source software and hardware project to showcase the work of shader artists. It looks like an old-school radio tuner, but it's connected to a flickering CRT screen.
Mostly the screen shows static, but as you explore the quantum frequency band you encounter "stations" that are abstract procedural animations. They look like something created by alien minds: mathematical, geometric, but somehow also warm and compassionate. They are multi-dimensional streams of friendship and curiosity from outer space.
The IGR was created by me, Gábor, but it's only the vehicle for the amazing work of the contributing artists: speginel, matthi, ...
It's best to lay back and enjoy the transmissions. But the IGR is also a fun project and I'm sharing all the designs and source code so you can use it in your own projects. There's a page about the hardware and another one about the software.
If you are an alien artist youself, check out the page on how to contribute art.
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10k | Capacitor_SMD:C_0805_2012Metric | R3, R4, R5, R6, R10, R11, R12 |
| 4 | , , , | ||
| 4 | 100nF | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5, C6 |
| 3 | 200 | Capacitor_SMD:C_0805_2012Metric | R2, R9, R13 |
| 3 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 330 | Capacitor_SMD:C_0805_2012Metric | R7, R8 |
| 2 | Conn_01x16 | Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_Vertical | J1, J2 |
| 2 | MBR0520 | Diode_SMD:D_SOD-123 | D2, D3 |
| 1 | 1k | Capacitor_SMD:C_0805_2012Metric | R1 |
| 1 | ATtiny3216-S | Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm | U1 |
| 1 | CO 3570.1331.053 | Relay_THT:Relay_SPST_StandexMeder_SIL_Form1A | K1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | TS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
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Questions
How big is the Mcu PCB?
It measures 60 × 94 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mcu use?
35 parts, built around the ATTINY3216-SF and MBR0520. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Mcu KiCad files?
From the gugray/InterGalacticReceiver repository on GitHub, at the commit this page was made from: the board is electronics/mcu/mcu.kicad_pcb and its schematic electronics/mcu/mcu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mcu design in my own project?
Its repository states no licence, so its author keeps all rights: ask gugray before reusing the design.